Non-Isothermal Crystallization Kinetics of Polyamide 6/h-Boron Nitride Composites

Abstract

ABSTRACTHexagonal boron nitride nanosheets were mixed with polyamide 6 to fabricate polymer-based composites by using a solution blending method. The nonisothermal crystallization behaviors of the as-prepared composites were investigated via differential scanning calorimetry. Results showed that the peak temperature of the exothermic crystallization curve was moved to lower temperature with increase in the cooling rate. At the same cooling rate, the peak temperature of the pure polyamide 6 was lower than those of the composites. Moreover, the crystallization rate increased gradually with increase in the cooling rate. In addition, at the cooling rates of 5 or 10°C min−1, the crystallization rate of pure polyamide 6 was higher than those of all compositions of the composites. However, at the cooling rates of 20 or 40°C min−1, the crystallization rate decreased first and then increased with increase in the fillers loading. The crystallization mechanism was between one-dimensional and two-dimensional during the crystallization process.